Sanyo Electric Co., Ltd.

Masao Nakada

Akiko Inami

Atsushi Furukawa

Takashi Sugiyama

Takeshi Ban

Yachiyo Itou

Noriyoshi Usui

A mobile digital device comprises a ten-key pad being comprised of a key maton which ten-key buttons-with respective projections-on the under surfaces thereof are laid out and a key circuit board on which respective contacts-corresponding to the projections are laid out, an electrostatic capacity sensing padfor sensing an electrostatic capacity change to detect a touched region and having through holes to be inserted the projections corresponding thereto and being provided with between the key matand the key circuit board, and a controller for selecting a function corresponded to a feature of the touched region detected by the electrostatic capacity sensing pad and executing the selected function. Owing to such constructions, a desired function can be selected by way of finger touching to the mobile digital device.

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Seki, Japan

Masao Nakada